百科词条β-巯基乙胺(2-Mercaptoethylamine)smiles C CS N tikz \usepackage chemfig \begin document \chemfig atom sep=2em HS-CH 2-CH 2-NH \end document作者:admin2026-08-163D结构C(CS)N\usepackage{chemfig} \begin{document} \chemfig[atom sep=2em]{ HS-CH_2-CH_2-NH } \end{document}